HBNS: Conspiracy Theories Affect Birth Control Use by Black Men and Women What’s interesting is that this is in the US. Reproduction is an emotionally intense issue, and I think especially prone to conspiracy theory. Many Central Asians believe that the USSR limited contraceptive access in the Muslim republics so they’d have a big army without risking Russian lives. Women also tend to believe that all forms of birth control are dangerous, and that only abortion doesn’t cause cancer.